Question

您好我是jsp servlets的新手

我正在编写一个简单的登录和注册应用程序

我正在尝试通过java代码与MySQL连接，但我正在

HTTP状态500 - javax.servlet.ServletException：java.lang.ClassNotFoundException：com.mysql.jdbc.driver

＆＃13;

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ page import="java.sql.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title></title>
</head>
<body>

<%
	String user=request.getParameter("uname");
	String pwd=request.getParameter("pass");
	String fname=request.getParameter("fname");
	String lname = request.getParameter("lname");
    String email = request.getParameter("email");
    Class.forName("com.mysql.jdbc.driver");
    Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/test_database","root","Welcome123");
    Statement st=con.createStatement();
    //ResultSet rs;
    int i=st.executeUpdate("insert into members(first_name, last_name, email, uname, pass, regdate) values ('" + fname + "','" + lname + "','" + email + "','" + user + "','" + pwd + "', CURDATE())");
	if(i>0){
		   //session.setAttribute("userid", user);
        response.sendRedirect("welcome.jsp");
       // out.print("Registration Successfull!"+"<a href='index.jsp'>Go to Login</a>");
    } else {
        response.sendRedirect("index.jsp");
    }
	



%>



</body>
</html>

＆＃13;

我也包含了jar文件，虽然我收到了这个错误

mysql-connector-java-5.1.34-bin这是我正在使用的jar文件。

Answer 1

应为com.mysql.jdbc.Driver。

您已撰写driver，但班级名称为Driver。所以纠正它，它应该有用。

Class.forName("com.mysql.jdbc.Driver");

HTTP状态500 - javax.servlet.ServletException：java.lang.ClassNotFoundException：com.mysql.jdbc.driver

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